Electrical controller.



D. J. HAUSS.

ELECTRICAL CONTROLLER.

APPLICATION FILED JUNE 29, 1911.

1,087,880, Patented Feb. 17, 1914.

UNITED STATES DAVID J. HAUSS, OF AURORA, INDIANA.

ELECTRICAL CONTROLLER.

'ltfI having a single controller lever with two movements independent of each other, one to vary the speed of the motor and the other to stop and start the motor.

Another object is to provide a controller by/means of which the rotation of the motor armature can be almost instantly stopped without reference to the speed at which it may be rotating, by connecting said armature'up as a generator, and by means of which the armature may be caused to resume rotation at the same rate of speed, or a different rate of speed as desired.

Another object is to provide a controller adapted to be employed where frequent changes of speed and frequent stops are re quired, as for instance, electrically driven elevators, hoisting mechanism, cranes, and music players.

My invention further consists in certain details of form, combination and arrangement, all of which will be more fully set forth in the description of the accompanying drawings, in which:

Figure 1 is a diagram, partly in perspective of an electric motor and controller embodying my invention. Fig. 2 is a side elevation of the controller of Fig. 1. Fig. 3 is a view similar to Fig. 2 illustrating a modification. Figr 4 is a detail sectional view on line 2 z of Fig. 3.

1n the accompanying drawings illustrating one of. the preferred embodiments of my invention A represents the motor field winding B the motor armature, and C C the line wires by which current is supplied to the motor.

2 and 3 represent binding posts and 4 a switch.

D D represent two series of contacts mounted upon opposite sides of a controller base 6. Electrical resistance 7, which may be either live or dead resistance, is interposed in circuit between the respective adjacent contacts D D. A lever or contact bar 8 is Specification of Letters Patent.

Application filed June 29, 1911.

Patented Feb. 17, 1914. Serial N 0. 635,983.

pivotally connected to the base 6 at 9 and its opposite ends are adapted to bear upon and establish electrical contact between a contact member D and a contact member D, and by its pivotal movement to engage different pairs of said contacts to vary the amount of resistance in circuit with the armature. The contact bar 8 has an upwardly projecting forked arm 10 by means of which it is adapted to be engaged by the controller lever to shift the bar 8 upon its pivot to vary the amount of resistance in circuit.

The controller lever is preferably composed of a main section 11 and an extensible section 12 which when not in use is adapted to telescope within the main section 11 and is held thereto by a screw 13 threaded to the section 11 and with its inner end engaging a spline 14 in the section 12. The section 11 at its rear end has a reduced neck 6 between two collars d d which neck is pivotally supported in the forked end of a bracket 15 rigidly attachedto the rear face of the controller base. The controller is" thus free to turn axially and also to swing in a horizontal direction through a suflicient angle to enable it through its engagement with the forked arm 10 to move the bar 8 from one extreme to the other of the contacts D D. A sleeve 16 of insulating material prevents electrical contact between the section 11 and the forked arm 10, While the bracket 15 is insulated by reason of its being carried by the base 6 which is of insulating material. The base 6 is also provided with two insulated contact plates 17 and 18 let into its upper edge. Contact members 19 and 20 project laterally from opposite sides of the controller section 11 and are adapted byturning said section axially to contact respectively with said plates 17 and 18 irrespective of the. position of the bar 8. The controller section 12 has 'a crooked end or head 21 to facilitate adjusting the controller lever axially. A bent rod 22 carried by the collar (1 engages the under side of the bracket 15 to prevent the displacement of the controller lever from the forked end of bracket 15.

The controller and motor are connected up as follows: A line wire 30 connects the binding screw 2 with one end of the field winding and a line Wire 31 connects the opposite end of the. field winding with the binding post 3, so that the field winding is continuously in circuit when the switch 4 is closed. A line wire 32 connects one of brush 33 is connected the commutator brushes 33 with the binding post 3 and the 0p osite commutator b a line wire 34 with the lower one of t e series of contacts D. The upper contact of the series D is connected by a line wire 35 with the controller member 11 and contact members 19 and 20. A line wire 36 conn ts the plate 17 with thebinding post=2 at; a line wire 37 connects''he opposite plat Q18 with the binding pos ,3.

In operation, the switch 4 being closed the field winding is in circuit and energized. When the controller lever is turned axially to make contact between the plate 17 and the member 19 as shown in Fig. 1, a circuit is established from binding post 2 to plate 17 fihence through members 19 and 11 and line 35 to the upper contact D thence through the resistance 7 from one contact D to another until the bar 8 is reached, thence through the bar 8 to a contact member D, thence through the resistance 7 from one contact D to another until the lowercontact D is reached, thence by wire 34: to the brush, 33', through the armature and by brush 33 and line 32 to binding post 3,Ycausin' the armature to rotate at a speed depen ing upon the position of the bar 8 relative to the contacts D D and the amount of resistance in circuit with the armature, which as shown in Fig. 1 is nearly a maximum of resistance in circuit. The movement of the controller lever in a horizontal plane causes, the bar 8 to move .pivvotall gm vary the resistance, and without brea ing contact at plate 17 or stopping the rotation of the armature.

In order to stop the motor no change in the resistance is necessary, but the controller lever is shifted axially to break contact between plate 17 and member 19 and to make contact between plate 18 and member 20, which breaks the connection between the armature and the line wire C leaving the field energized and connects the armature up as a current generator through the brush 33, line 32, line 37, plate 18, member 20, line 35, resistance 7 from one contact D to another, bar 8, resistance 7 from one contact D to another to line 361 and brush 33. The resistance in circuit with the armature remains the same as when connected as a motor, that is a maximum "resistance for stoppage from slow speeds and a minimum of resistance for stoppage from high s eeds, which tends to secure uniform resu ts 1n the breaking or stopping action or effect and very quickly stops rotation of the armature. In like manner no change in resistance is necessary upon starting the armature a ain as a motor, and it very quickly resumes t e same rate of speed it had before being stopped. For operating music players and other mechanisms this instant stopping -ments serving and resumption of the same rate of speed is of great practical importance, as in maintaining the tempo, and avoiding discordant sounds. I

In the modification Fi s. 3 and 4 the controller lever instead 0 having an axial movement to make and break the contacts necessary to convert the armature from a motor to a generator, has a vertical movement by means of a pivotal joint 50 which permits contact members 51 52 corresponding to members 19 and 20 of Fig. 1 to move into contact with the plates or contacts 53 and 54, corresponding to the contacts 17 and 18 of Fig. 1. The controller lever 55 is preferably normally held by a spring 56 so as to make contact between members 52 and 54: to connect the armature up as a motor. At its rear end the controller lever is pivotally connected upon a vertical axis 57 to a bracket 58 carried by the base 59, which permits the controller lever to be moved in a horizontal direction and thereby through its engagement with a forked arm 60, corresponding to the member 10 of Fig. 1 to shift a resistance bar to vary the resistance in circuit with the armature as heretofore described.

The mechanism herein illustrated and described is capable of considerable modification without departing from the principle of my invention.

Having described my invention, claim is;

1. An electrical controller comprising an electrical resistance, a plurality of electrical contacts in pairs adapted to connect a motor armature up through said resistance either as a motor or as a generator, and a controller lever having two movements independent -of each other, one of said moveto vary the amount of resistance in circuit with the motor armature and the other movement serving to connect the motor armature in circuit with said resistance either as a motor or as a generator.

2. An electrical controller com rising an electrical resistance, a plurality of contacts in pairs adapted to connect a motor armature up through said resistance either as a motor or as a generator, and a controller member adapted to be actuated by the operator, said controller member having two movements independent of each other, one of said movements serving to connect the motor armature u s a otor or as a generator through sai qspe tive pairs of contacts, and the other In vement serving to independently vary the ount of said resistance in circuit with sai armature.

3. In combination with an electrical motor having a continuously energized field wind in an electrical controller com'rising an electrical resistance, a plurality oielectric 1 contacts adapted to open and clo separate what I electrical circuits through said resistance to said motor armature, a movable controller'having two movements controllable independently of each other, means actuated by one of the movements of said controller to open and close said separate circuits through said re sistance and motor armature, and means controlled by the other movement of said controller to vary the amount of said resistance in circuit.

4. An electrical controller comprising a base, an electrical resistance, a series of contacts carried by said base and in circuit at intervals with said resistance, a pivotally supported controller lever carrying two contact members, said controller lever having two movements independent of each other, motor armature contacts adjacent to and adapted to be engaged by said controller lever contacts due to one movement of said controller lever, a movable member connected to and adapted to be actuated by the other movement of said controller lever to selectively engage said respectiv resistance contacts to vary the resistance in circuit.

5. In a controller, a segmental resistance, a movable switch lever to increase or decrease the amount of resistance in the motor circuit, a cont-roller lever pivotally supported at one end and connected to said movable switch lever so that the movements of said switch lever backward and forward will vary the resistance in the motor circuit, a plurality of stationary contacts electrically connected to said motor armature, and a plurality of movable contacts controlled by the rotatablemovement of said controller and electrical connections substantially as specified between said resistance sections, contacts, and an electric motor.

7. In a controller mechanism an electric motor comprising an armatur liiid a continuously energized field, a variable resist-- ance to be included in circuitwith the motor armature, and a controller comprising a pivotally supported arm movable to and fro to vary the resistance in the armature circuit and rotatably on its axis to make and break the armature circuit and to connect the armature in circuit with said resistance either as a motor or a generator.

8. A controller mechanism comprising an electric motor having an armature and a field continuously in energizing circuit, a pivotally supported controller lever having two movements independent of each other, one f which serves to vary the speed of the armature by varying the amount of'resistance in the armature circuit, and the other to stop and start the armature movement by selectively including said armature and a resistance in an energizing circuit to drive said armatureas a motor, or excluding said armature and a resistance from an energizing circuit and connecting said armature and resistance in series as a generator to sto the rotation of the armature. 3

9. In a controller mechanism, an electric motor comprising an armature and a continuously energized field, a variable resistance to be included in circuit with the motor armature, and a controller comprising a pivotally supported arm movable to and fro to vary the resistance in the armature circuit and rotatable on its axis to make and break the armature circuit and to connect the armature in circuit with said resistance either as a motor or'a generator, said controller lever comprising two sections, one of which is adjustable from an idle to an operative position.

In testimony whereof I haveafiixed my signature in presence of two witnesses.

DAVID J. HAUSS.

Witnesses:

C. W. MILES, Vt. THORNTON BOGERT. 

